Qasmi edited several prominent literary journals, including Phool, Tehzeeb-i-Niswaan, Adab-i-Lateef, Savera, Naqoosh, and his own journal, Funoon.[4] He also worked as the editor of the Urdu daily Imroze. Qasimi contributed weekly columns to national newspapers like Rawan Dawan and Daily Jang for several decades. His poetry has included both traditional ghazals and modern nazms.

In December 2011, Professor Fateh Muhammad Malik and noted columnist Ata ul Haq Qasmi arranged a seminar on the life and achievements of Ahmad Nadeem Qasmi at the International Islamic University, Islamabad.
His literary work has been appreciated and admired by Urdu writers, poets and critics,[3] although there is also criticism of his literary work and of his personality. Fateh Muhammad Malik is a long-time friend of Ahmed Nadeem Qasmi. In his book about the life and personality of Ahmed Nadeem Qasmi called 'Nadeem Shanasi', he gives the impression that it is evident from Qasmi's letters to him that Qasmi had a buried disliking for Faiz and perhaps considered himself a poet greater than Faiz.[5] "The letters also reveal that Qasmi had a narcissistic personality and an inflated ego when it came to his contemporaries. He consciously or unconsciously tried to belittle Faiz, though without much effect."[5]